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Analogue / Linear / Mixed Signal ICs

The latest Electronics Weekly product news on analogue, linear and mixed-signal ICs.

0.05% voltage reference for under a microamp

TI reference REF35

TI has introduced a voltage reference that typically runs from 680nA and yet has a max initial error of ±0.05% and a max temperature coefficient of 10ppm/°C across -40 to 125°C – and it will operate down to -55°C. Called REF35, it will run from up to 6V and different versions offer outputs of 1.024, 1.2, 1.25, 1.6, 1.8, 2.048, 2.5, 3, 3.3, ...

MEMS electrostatic relay switches 25W across dc to 18GHz

MenloMicro-example-switch

Menlo Micro has released another MEMS electro-mechanical relay, this time a single-pole four-throw (SP4T) dc-18GHz switch. MM5120 will handle 25W (150W pulsed), according to the company, though its 5.2 x 4.2mm LGA package. Insertion loss is typically <0.6dB at 12GHz. IP3 linearity is said to be >95dBm. Contact movement is though electrostatic attraction, with the necessary voltage generated by an integrated charge ...

Shrunk AFE for bio-impedance monitoring

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ADI’s MAX30009 BioZ AFE  claims to reduce the size and extends the life of bioimpedance (BioZ) remote-patient monitoring (RPM) devices. For developers of small, battery-powered, continuously wearable devices, this AFE on a chip offers clinical-grade vital sign measurements of bioimpedance analysis for patient health assessment for wellness wearables and medical-grade patches. The device  monitors a  range of BioZ modalities through ...

Normally-closed e-relay is <2mm across

Panasonic Industry Photo relay CC series TSON package

Panasonic is to squeezed a single-pole normally-closed mosfet relay into a 1.95 x 1.8 x 0.8mm TSON package. An extension of the company’s CC series, “we are pretty certain that our 1FormB TSON type is currently matchless throughout the industry as far as size and current consumption are concerned”, said Panasonic’s Michael Renner. “With just an eighth of a SOP4 package’s ...

Low power and quick accurate low-voltage op-amps from Maxim

MAX40024 ethanol sensor app

Maxim has quietly released a couple of op-amp families, one very low power and the other blending high speed, precision and low noise. MAX40023 and MAX40024 are single and dual amplifiers that will run from 1.6 to 3.6V, typically for 17μA per channel. A shut-down pin typically takes this to 55nA. Both inputs and outputs swing rail-to-rail and, commensurate with such ...

Diodes’ ideal diode controller

Diodes DZDH0401DW ideal diode controller app

Diodes has announced an ideal diode controller for reverse discharge protection. Called DZDH0401DW, it is designed to work with a p-channel mosfet in the high-side rail in systems up to 40V. It might better be described as a ‘nearly ideal diode controller’ as it draws some current from the output circuit when no input is connected – 147μA if a ...

7x7mm chip delivers 2x100W stereo

Infineon MA5332MS audio amplifier

Infineon has created a 7 x 7mm multi-chip module that can deliver two audio channels of up to 100W each. Called MA5332MS, the company claims 95% power efficiency for the Class-D amplifier when driving that power into 4Ω loads (10% THD+N, ±36.5V supply). Looking at the data sheet, up to 90W is available with <0.1% THD+N. Providing the load is 1W, THD+N ...

Dual high-side load switch driver for 48V mild hybrids

Infineon 2ED4820-EM high side load switch driver

Infineon has introduced a dual-channel smart gate driver for high-side load switches, design to control heavy loads in a 48 V board net through an SPI interface. Called 2ED4820-EM and ruggedised against vehicle transients, it can tolerate negative voltages at Vbat down to -90V and voltages up to +105V. Bus current sensing is included, with the amplifier compatible with both ...

TI’s oscilloscope input buffer amp combines 3GHz operation with low noise

TI BUF802 concept

Texas instruments has revealed a buffer amplifier developed especially for oscilloscope inputs from dc to GHz. BUF802 signal paths “Oscilloscope manufacturers have got a choice: develop a discrete JFET input stage and risk limited performance, or develop their own asic,” TI general manager of linear amplifiers John Caldwell told Electronics Weekly. Developing a custom asic “is a massive undertaking where ...

Touch control ICs for harsh electrical environments get automotive approval

AX112A Touchnetix automotive

TouchNetix has got automotive AEC-Q100-6 qualification for its AX112 touch controller IC, which also includes hover sensing, force sensing and the control of haptic response. “Touchscreens based on the AX112 can support features such as pre-select, zoom-on-approach, dial-on-display and integrated haptic feedback without the need for additional hardware,” said the company. It “also supports the operation of touchscreens with variable thickness, ...